[jira] Updated: (COLLECTIONS-280) Add Predicate that failed PredicatedCollection.validate to IllegalArgumentException text

["Henri Yandell (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/COLLECTIONS-280?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Henri Yandell updated COLLECTIONS-280:
--------------------------------------

    Fix Version/s: 3.3

> Add Predicate that failed PredicatedCollection.validate to IllegalArgumentException text
> ----------------------------------------------------------------------------------------
>
>                 Key: COLLECTIONS-280
>                 URL: https://issues.apache.org/jira/browse/COLLECTIONS-280
>             Project: Commons Collections
>          Issue Type: Improvement
>          Components: Collection
>    Affects Versions: 3.2
>         Environment: N/A
>            Reporter: Chris Lewis
>            Priority: Minor
>             Fix For: 3.3
>
>
> In a project I'm working on at the moment, I decorate some of my sets with multiple Predicates.  In the event that validation fails, it would be nice to know which predicate caused the failure.
> I'd suggest changing the validate method in PredicatedCollection to:
>     protected void validate(Object object) {
>         if (predicate.evaluate(object) == false) {
>             throw new IllegalArgumentException("Cannot add Object '" + object + "' - Predicate '" + predicate + "' rejected it");
>         }
>     }
> Then, the user can provide a toString method with relevant information about the Predicate and why it might cause the validation to fail if they choose.

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